CoronaVac ‘reduces mortality by 97pc’

The CoronaVac vaccine reduces coronavirus mortality by 97 percent, according to early results of the immunization campaign in Uruguay, which relies heavily on the Chinese jab. 

In people who had received two doses, it reduced infection with the coronavirus by 57 percent and intensive care admissions by 95 percent, said a report by the health ministry of the South American nation.

Compared to other vaccines in use, there have been few scientific publications on the efficacy of CoronaVac, produced by Chinese firm Sinovac, and widely divergent reported results.

Coronavac is nevertheless widely used in China and in some two dozen other countries.

Chile reported last month that early results from its immunization campaign showed CoronaVac to be 67 percent effective at preventing symptomatic Covid-19 and 80 percent at preventing death.

Trial results with CoronaVac in Brazil showed efficacy of about 50 percent in preventing symptomatic infection, while Turkish data said it was more than 80 percent effective.

Uruguay, which started vaccinating on March 1, has used CoronaVac in more than 80 percent of cases.

It has reserved the Pfizer-BioNTech jab for older people, health workers, and people other illnesses.

The Pfizer shot, the results showed, was 75 percent effective at preventing infection, 99 percent effective at preventing illness requiring ICU admission, and 80 percent effective at preventing death.

CoronaVac is a traditional type of vaccine, using inactivated virus to trigger immunity, while Pfizer uses RNA messenger technology.